Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239945 | Sealed headphone | Nobuhisa Atoji, Kazue Sato | 1980-12-16 |
SK
Shoichi Kusomoto
Overall (All Time): #4,125,952 of 4,157,543Top 100%
1
Patents All Time